Manual paper feeding mechanism for adding machines



G. J. BARRETT 1,804,736

MANUAL PAPER FEEDING MECHANISM FOR ADDING MACHINES May 12, 1931.

Filed Dec. 24, 1928 BY C r C K ATTORNEY:

Patented May 12, 1931 ,UNITED. STATES PATENT or-FicE GLENN 1.3mm, or CHICAGO, ILLINOIS, ASSIGNOR TO PORTABLE ADDING mama COMPANY, or. CHICAGO, ILLINOIS feeding MANUAL PAPER FEEDING MECHANISM FOR ADDING MACHHVES Applicationfiled December 24, 1928. Serial No. 328,257.

Myinvent-ion relates to improvements in tape or paper manual feeding mechanisms for adding machines or any machine requiring a continuous paper or tape.

The object of this invention is to provide a convenient means for manually advancing the paper or tape when the mechanism of the machine to which it is adapted is completely enclosed and when the case is opened for manipulation or adjustment, whether said machine may have a stationary paper platen mechanism, or one adapted to swing forward to printing position, for example, like the well known Corona adding machine.

Objects pertaining to details appear from the description to follow. M invention is pointed out in the claims. tructures embodying the same are clearly shown in the accompanying drawings, in which:

Fig. 1 isa right side perspective view and shows the twirler knob of my invention extending from the enclosing case ofan add- 7 ing machine.

Fig. 2 is a left side detail perspective view and shows the lid of the addin machine tilted back exposing the paper eed mechanism of my invention.

Fig. 3 is an enlarged detail elevation view of the train of connecting gears and adjustin block from the outside twirler knob.

y invention is particularly adapted to the paper feed of an encased adding machine or any machine requiring a continuous tape or paper, where said casing completely cov; ers the machine. It avoids the necessity of uncovering any portion of the machine in order to manually feed the paper up to a .point where it may be inspected or torn off and at the same time provides similar effective paper feed when the casing is opened.

1 is the forward portion of an enclosing case. 2 is the lid for inspecting the interior hinged at 3. 4 is an opening in the lid covered with glass for inspecting the printing. 5 is the platen around which the paper is fed. 6 is a window opening in the lid through which the paper may be fed. 7 is the paper strip itself which projects in Fig. l as it leaves the machine. 8 is the frame supporting the platen. 9A is the .i'nob upon the outside of the case for manually feeding the paper through the opening 6. 10 is the pinion attached to the "platenshaft 11 to which is attached the knob 9. Fig. 3 shows only a portion of the teeth of said pinion 10. It will be understoodthat teeth complete the dotted arc.

Fig. 3 shows the platen pinion 10 in engagement with the idler 12 pivotallymounted upon the adjustable block 13 carried by the side wall of the case. 14 is the main actua ing pinion rigidly attached to the actuating shaft 15 which is journaled in the block 13-and extends through the right side of the lid 2-to which shaft 15 is attached the knob 9A. The actuating pinion 14 is also shown with incompleted teeth for con venience. It will be understood that teeth completely fill the dotted arc.

. 16 is a stud extending from the inside of the sidewall of the lid 2 and through a slot 17 in the block 13 for adjustment. 18 is a lock nut firmly clamping the block 13 in proper adjusted position. The block13 is adapted to pivot upon the shaft 15, said slot 17 being in an arc concentric with the center of said shaft 15 and the object of this arrangement is to provide an adjustment between the idler pinion 12 and the platen pinion 10 so that when the lid is replaced, as shown in Fig. 1, the mesh of the teeth will be perfect.

19 is a spring catch pivoted to the lid at 20. 21 is a finger piece for unlatching this catch when it is desired to elevate the lid. 22 is the pin, shown in dotted lines in Fig. 1, upon which said latch locks the lid firmly in position so that the manual feeding of the paper will not disturb the lid. The spring 23 upon the latch 19 exerts a tension upon the latch 19 to hold the same firmly engaged with the pin 22 in the forward portion of 2) attached directly to the platen shaft 1 2v a T 11,804,786

- 11. --It will be further understood that my invention admits of hinging a case as shown, I t, and also of swinging theplaten to rinting point when applied to a machine ike the e 5 Corona adding machine in which it is under- 4 stood the. platen frame 8 mounted in the machine, is adapted to swing forwardly to 7 the printing point. Incase of a swinging platen'just men 10 tioned, it will be understood that the platen pinion 10 starts from position shown in ig. 3 and swings forwardly with the platen frame, and returns to same posi-y tion asshown in Fig. 3. There being no.

tension whatever upon the actuating pinion T14 nor'the idler 12, the teeth of 12 and 10* v readily remesh upon the return of the platen :to normal osition. 4

Having t us described my invention, what I claim' as new "and desire to. secure by Letters Patent, is:. v i 1." In combination with a movableca'se enclosing a printing platen and paper tapeof anadding mach ne'or similar device, of a disconnectable means "for manually feeding said paper comprising 'afeeding knob or finger piece outside said "case,,an, actuating pinion attached thereto, an adjustable idler i. 1 pinion always in mesh with said actuating pinion, and a pinion connected to said rinting platen normally mesh with sai idler pinion which is separable therefrom. 2. In combination with a movable case en-' closing a1printin platen and paper tape 85 of an adding mac ine or similar device, of f a disconnectable means for manually feeding said paper comprising a feeding knob or finger piece outside said case, an actuating pinion attached thereto, an idler pin-' 0 ion always in mesh with said actuating pinion, and a pinion connected-to said rmting platen normally in mesh with said i ler pinion'which is separable therefrom.

3. In combination with a movable case enclosin a, printing platen and paper tape of an a ding machine or similar device, of a disconnectable means for manually feeding said paper comprising a feeding knob' or finger piece outside said case, an actuat ing pinion attached thereto, and a printin laten with pinion within the said case with isconnectable gear to the actuating pinion, as specified.

In witness whereof I have hereunto set my hand.

GLENN J. BARRETT, 

